| 灌溉方式对湘南双季稻产量的影响机制研究 |
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| 引用本文： | 李永松,袁帅,陈基旺,苏雨婷,崔璨,蒋艳方,陈平平,王晓玉,易镇邪.灌溉方式对湘南双季稻产量的影响机制研究[J].杂交水稻,2022(1):103-110. |
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| 作者姓名： | 李永松 袁帅 陈基旺 苏雨婷 崔璨 蒋艳方 陈平平 王晓玉 易镇邪 |
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| 作者单位： | 湖南农业大学农学院/南方粮油作物协同创新中心 |
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| 基金项目： | 国家重点研发计划“粮食丰产增效科技创新”重点专项(2018YFD0301005,2017YFD0301501)。 |
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| 摘 要： | 为探索适宜湘南双季稻的灌溉方式,以早稻中嘉早17和晚稻盛泰优018为材料,比较研究了淹水灌溉、间歇灌溉、湿润灌溉3种灌溉方式对湘南双季稻产量的影响,并从根系形态、叶面积指数、叶绿素含量(SPAD值)、干物质积累与转运等方面探讨了其影响机制.结果 表明,间歇灌溉处理2季总产最高,达15.55 t/hm2,分别较淹水灌溉和...
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| 关 键 词： | 湘南 双季稻 灌溉方式 产量 机制 |
Mechanism of Effects of Irrigation Modes on Yield of Double-cropping Rice in Southern Hunan |
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| Abstract: | To probe the optimal irrigation mode for double-cropping rice in southern Hunan,using early rice variety Zhongjiazao17 and late rice variety Shengtaiyou 018 as the materials,the effect of three irrigation modes(flooding irrigation,W1;intermittent irrigation,W2;wetting irrigation,W3)on yield of double-cropping rice in southern Hunan was comparatively studied,and the mechanism of its effect was discussed from the aspects of root morphology,leaf area index,chlorophyll content(SPAD)and dry matter accumulation and transportation,etc.The results showed that the total yield of double-cropping rice was the highest at 15.55 t/hm2 in W2,higher than those by 8.59%and 10.44%in W1 and W3,respectively.Irrigation mode significantly affected yield components of rice with the ear-bearing tiller rate,effective panicles and seed setting rate of W2 significantly higher than those of W1 and W3.Irrigation mode affected source characteristics of rice with highest leaf area index,leaf SPAD value and dry matter accumulation,and least decreasing range of leaf area index,leaf SPAD value,fresh and dry weight and volume of roots per hill at the middle and late growth stage of rice in W2.Irrigation mode affected matter transport of rice with highest export rate of dry matter of stem-sheath and leaf in W2.It is indicated that the intermittent irrigation could increase yield of double-cropping rice by raising the source,sink and export rate of dry matter of stem-sheath and leaf,thus it could be extended and applied in double-cropping rice area of southern Hunan. |
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| Keywords: | southern Hunan double-cropping rice irrigation mode yield mechanism |
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